She fills the blank that no biography of Billy Tipton, even one as beautifully researched as Ms Middlebrook's, could ever wholly explain.

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Food that fills you up but has no effect on your weight?

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However, it still has no bonding abilities, so no bonding to the bone, it only fills the void without any true integration to the bone.

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The cost is moderate enough that the school always fills open slots by word of mouth with no marketing, not even a website, says Moore.

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As your bracket fills out, don't pick any team seeded lower than No. 8 to advance to the Final Four--only two such teams have ever made it.

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There are no sketches or documents relating to the Sistine Madonna's composition, but the museum fills this gap by exhibiting several other Raphaels, including the famous portrait (on loan from the Uffizi) of a melancholy Julius II slumped in his red throne and a portrait of the noblewomen Donna Velata, whose noble features may have inspired Raphael's depiction of Mary in the Sistine Madonna.

WSJ: The Sistine Madonna | Old Masters Picture Gallery | The Madonna Above the Cherubs | By A.J. Goldmann